CN105737910A - Variable line size averaging pitot tube - Google Patents
Variable line size averaging pitot tube Download PDFInfo
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- CN105737910A CN105737910A CN201510212616.XA CN201510212616A CN105737910A CN 105737910 A CN105737910 A CN 105737910A CN 201510212616 A CN201510212616 A CN 201510212616A CN 105737910 A CN105737910 A CN 105737910A
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- pipeline
- major component
- even speed
- speed tube
- tube major
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
- G01F1/46—Pitot tubes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/061—Indicating or recording devices for remote indication
- G01F15/063—Indicating or recording devices for remote indication using electrical means
Abstract
Systems, apparatus and methods are disclosed for coupling an averaging picot tube (APT) primary element to a process pipe. A mounting assembly mounts the APT primary element to the process pipe such that a length of the APT primary element extending into the process pipe is adjustable to accommodate different sized process pipe diameters. The mounting assembly includes a weld coupling coupled to the process pipe over an opening in the process pipe and having the APT primary element extending therethrough into the process pipe. An extension pipe nipple is connected to the weld coupling and has the APT primary element extending therethrough such that a transition between a neck section and a sensor section of the APT primary element is positioned inside the extension pipe nipple. A union component, a ferrule, and a cap keep the APT primary element in the mounted position and form a process seal.
Description
Technical field
It relates to industrial stokehold or monitoring system.More specifically, it relates to a class process variable transmitter, it uses even speed tube (APT) probe to measure the process variable of industrial process.
Background technology
In industrial setting, control system is used to monitoring and controls the stock (inventories) of industry and chemical process etc..Generally, the control system performing these functions uses the key position place being distributed in industrial processes and the field device controlling circuit being connected in control room by process control loop.Term " field device " refers to any device of the function performed in distributed AC servo system or process monitoring system, including all devices being used in the measurement of industrial process, control and monitoring.
Some field devices include the transmitter being connected to process fluid.Transmitter should be understood that what refer to is based on the device being physically entered generation output signal or exporting based on input signal generation physics.Generally, Input transformation is have multi-form output by transmitter.The type of transmitter includes various analytical equipment, pressure transducer, critesistor, actuator, solenoid, display lamp and other device.
Such as with the field device of process variable sensor in industrial processes can on-the-spot be arranged on pipeline, container neutralizes in other industrial process equipment.Such device senses the process variable of such as process fluid flow, process fluid temperature, pressure process fluid, process fluid conductivity, process fluid pH value and other process variables.Other type of industrial process-field device includes the communication equipment of valve, actuator, field controller, data display equipment and such as industry spot bridge.
One class process rate-of-change sensor is the effusion meter that such as can measure fluid flow rate.Due to its can be inserted in flowline and can retract from flowline, its low pressure loss and reliable performance, so the class effusion meter adopting even speed tube (APT) major component is the main flow device for flow measurement.APT major component senses the pressure of the peaceful multiple positions being all from the pipeline that process fluid flows through.Then this average pressure is used to combine with flow theory and the experiment amount of determination, to provide the flow measurement of fluid.One class APT major component can buy from Emerson Process Management company (EmersonProcessManagement)APT.At least forThis kind of major component of APT, its need APT major component cross over process pipeline so that stride across on the cross section of pipeline multiple/time sampling can be averaged, to consider the change of the flow on cross section.
Because different client's needs, installation requirements etc., so, for the client of APT major component, the manufacture of APT major component generally has to customize this APT major component.The custom attributes of some APT major component manufactures causes that cost increases.Many APT major components use client provide internal diameter and wall thickness dimension and produced by order.The hole of the optimization that these sizes are used to determine on the upstream and downstream face of APT major component and groove pattern.The manufacture of customized type provides product, and this product achieves high-acruracy survey, but also extends the production cycle of APT major component at the outfan of order input and supply chain.
For the APT major component of some customization, the manufacture of product is only received in discrete cell information started with when communicating by value chain.Because client will not cut hole in the duct before installing flow measurement device, so when the size of flow measurement device is specifically designated, client is likely difficult to and obtains the required inner tubal wall thickness of major component manufacture and diameter dimension.This causes that client provides nominal duct size (size) and the convention of size (dimension) when order inputs.Nominal dimension is typically defined in industrial standard, for instance in ASMEB36 standard, and have uncertainty.Measured value it is not provided that, so the extra uncertainty up to several percentage ratios is likely to be introduced in flow measurement in small pipeline size due to client.
Discussed above only for providing general background information, and it is not intended to assist in the scope of claimed theme.
Summary of the invention
Disclose for even speed tube (APT) major component is connected to the system of process pipeline, apparatus and method.Even speed tube major component is mounted to process pipeline by a kind of mounting assembly, so that the length in the process that the extends into pipeline of even speed tube major component can be adjusted to accommodate various sizes of process pipe diameter.Described mounting assembly includes welding point, and this welding point is coupled to process pipeline on the opening in process pipeline, and even speed tube major component is extended through in its entrance process pipeline.Elongation pipeline adapter is connected to welding point, and makes even speed tube major component extend through it, so that the transition part between the described cervical region of even speed tube major component and described sensor part is positioned in the inside of described elongation pipeline adapter.Couple parts, sleeve pipe and even speed tube major component is maintained in installation site by cap and forming process seals.
There is provided present invention and summary, to introduce the selected parts of the concept further described in the following detailed description in a simple form.Present invention and summary are not intended to identify key feature or the essential feature of the theme claimed, and are intended to the scope being used to assist in determining claimed theme.
It should be noted that in disclosed feature, parts, device, system and method step any one can with feature, parts, device disclosed in other, use to system and method step combination in any.Even if feature disclosed in the exemplary embodiment provided, parts, device, system and method step are not illustrated in combination or come into question, the disclosure still includes these alternative compound modes.
Accompanying drawing explanation
Fig. 1 is the schematic diagram for the industrial stokehold monitored or control in process fluid or monitoring system according to exemplary embodiment.
Fig. 2 is the block diagram of the system according to Fig. 1 of exemplary embodiment and transmitter.
Fig. 3 is the schematic side elevation of the mounting assembly installing APT major component on process pipeline according to exemplary embodiment.
Fig. 4 illustrates the mounting assembly of the Fig. 3 being arranged on by APT major component on three various process pipelines with different inner diameters.
Fig. 5 illustrates the side view of the mounting assembly of the Fig. 3 being arranged on three various process pipelines by APT major component shown in Fig. 4 and illustrates the APT groove of the percentage ratio across three various process pipelines.
Detailed description of the invention
The disclosed embodiments utilize the mounting assembly of the barrel forms of elongation, to provide the even speed tube major component of variable mu tube linear dimension, this even speed tube major component can be installed in a series of line size when customizing major component for specific line size.This allows the production of lower cost, and decreases the production cycle installed in some exemplary embodiments.
Fig. 1 is simplification figure, it is shown that be used for monitoring or controlling industrial stokehold or the monitoring system 100 of the process fluid in industrial process.Typically, the such as field device of process variable transmitter 102 is positioned at the remote location of factory, and the process variable of sensing is passed back the control room 104 of centralized positioning.Various technology can be used to transmit process variable, including wired and radio communication.One usual cable communicating technology uses the technology being known as two lines (two-wire) process control loop 106, controls, in loop 106, to use a pair circuit to transmit information and to provide electric power for this transmitter 102 at this two line process.It is by being controlled between 4mA to 20mA by the levels of current of process control loop 106 for transmitting a technology of information.The current value being positioned at 4-20mA scope can be mapped as the corresponding value of process variable.Exemplary digital communication protocol includes(including the compound physical layer of digital communication signal in the 4-20mA analogue signal of the standard that is superimposed upon), FOUNDATIONTMFieldbus (the all-digital communication agreement that Instrument Society Of America (InstrumentSocietyofAmerica) promulgated in 1992), Profibus communication protocol or other agreement.Wireless process can also be implemented and control loop protocol, for instance include(IEC62591) technology for radio frequency.Process control loop 106 in Fig. 1 represent in the embodiment that the wired and radio communication between transmitter 102 with control room 104 is connected or both.
Process variable transmitter 102 is connected on APT major component 120 via the sleeve pipe mounting assembly 112 (shown in Fig. 1 a exemplary embodiment) of elongation, and this APT major component extends in process pipeline 108 and is configured to the one or more process fluid variables in measurement process pipeline 108.APT major component 120 includes one or more grooves and/or the hole 121 that supporting process variable is measured.Exemplary process variable includes flow, temperature, pressure and pressure reduction (DP).Process variable transmitter 102 includes sensor 224 and is configured to receive one or more process variable from APT major component 120 and provide other part/circuit (shown in Fig. 2) of transmitter output on process control loop 106.Due to the structure of the sleeve pipe mounting assembly of the elongation of use in exemplary embodiment, so for the specific internal diameter of process pipeline 108, APT major component need not have length or a channel patterns of customization, and APT major component is usable in having in the process pipeline of the internal diameter in different size scope.
In the exemplary embodiment, process variable transmitter 102 is pressure reduction or multivariable transmitter.In FIG, it can be seen that APT major component 120 is across the inside of process pipeline 108.Usually, APT major component is across the whole internal diameter of process pipeline 108, and the sleeve pipe mounting assembly 112 extended allows the APT major component of single length to be used to across the process pipeline with different-diameter, to provide greater flexibility and to reduce the demand customized.Direction arrow 126 indicates the direction that the fluid in pipeline 108 flows.In one exemplary embodiment, fluid manifold 128, head 129 and fluid transmitter 102 are shown as being arranged on the outer end of APT major component and mounting assembly 112.The sensor 224 (shown in Fig. 2) of transmitter 102 is pressure transducer 224, this pressure transducer 224 by extend through major component via fluid be connected to APT major component 120.The parts of the sleeve pipe mounting assembly 112 of different pressures transmitter 102 and elongation will be described in more detail below.
Fig. 2 illustrates the parts of the exemplary embodiment of process variable transmitter 102.The sleeve pipe mounting assembly of elongation is omitted in fig. 2, but is schematically depicted in more detail in figure 3.As shown in the system block diagram of Fig. 2, process variable transmitter 102 includes sensor 224 and is configured to receive process variable from APT major component 120 and provide other parts/circuit (not shown in figure 1) of transmitter output on process control loop 106.As discussed above, in the exemplary embodiment, process variable transmitter 102 is pressure reduction or multivariable transmitter.
As shown in fig. 1, the system 100 shown in Fig. 2 can be connected to the process control loop in such as loop 106 and be suitable to transmit such as relevant to the pressure reduction that the fluid in process pipeline 108 flows process variable output.In other embodiments, process variable output is relevant to multiple variablees of such as pressure and temperature.The transmitter 102 of system 100 includes loop communication circuitry 202, pressure transducer 224, measuring circuit 204 and controller 206.
Loop communication circuitry 202 can be connected to process control loop 106 and be suitable to be communicated by process control loop.Loop communication circuitry 202 can include for the circuit of communication on wired communications links and/or wireless communication link.Such communication can according to any suitable process industry standard agreement of the agreement all as discussed above including wired and wireless protocols.
In some exemplary embodiments, pressure transducer 224 includes the first port 210 and the second port 212, and this first port 210 and the second port 212 are connected to the first pressure transmission conduit 211 and the second pressure transmission conduit 213 extending through major component 120.The coupling of pressure transducer 224 and conduit 211,213 includes coupling by isolation diaphragm and other pressure transmission device and structure.Sensor 224 can be any device of the electrical characteristics having the change in response to the pressure applied and changing.Such as, sensor 224 can be the capacitance pressure transducer that its capacitance changes in response to the pressure reduction applied between port 210 and 212.
Measuring circuit 204 is coupled to sensor 224 and is configured to provide at least relevant to the pressure reduction between port 210 and 212 sensor to export.Measuring circuit 204 can be to provide any electronic circuit of the appropriate signals relevant to pressure reduction.Such as, measuring circuit can be analog-digital converter, capacitive digital converter or other other suitable circuit.
Controller 206 is connected to measuring circuit 204 and loop communication circuitry 202.Controller 206 is adapted to provide for process variable and exports to loop communication circuitry 202, and this output is relevant to the sensor output that measuring circuit 204 provides.Controller 206 can be Programmable gate array appts, microprocessor or other suitable device or multiple device.Although loop communication circuitry 202, measuring circuit 204 and controller 206 have described as independent module, it is contemplated that they can such as be bonded on special IC (ASIC).In one exemplary embodiment, memorizer 207 is included and is coupled to controller 206, for storing for the computer-readable instruction fetch of Configuration Control Unit 206 and/or strategy circuit 204, parameter value etc..
Referring now to Fig. 3, thus it is shown that illustrate the embodiment of a part for the measurement system 100 of the APT major component 120 according to exemplary embodiment and mounting assembly 112.Use the sleeve pipe mounting assembly 112 of elongation and there is the APT major component 120 of the hole unrelated with line size and/or channel patterns, the disclosed embodiments are usable in various different pipe diameter, thus providing following potential benefit: compared with traditional measurement system and APT major component, decrease the production cycle of installation for system 100.As shown in Figure 3, APT major component 120 includes the remotely located one or more grooves towards major component or hole 121.For various sizes of process pipeline 108, groove 121 is across the different weight percentage of the diameter of process pipeline.
In some exemplary embodiments, mounting assembly 112 includes welding point 305, elongation nipple joint 310, thread connection parts 315, sleeve pipe 320 and thread cap 325.Parts closest to the pipeline 108 of client are threaded outlet accessory or the welding point 305 according to MSS-SP97.This kind of welding point or branch outlet accessory are the pipe fittings of the casting being generally of female thread, and this pipe fitting can be welded on the side of pipeline to form arm connection.Hole was formed in the duct before connecting welding joint.In this example, welding point 305 is soldered on pipeline 108 around opening 330, and includes internal thread part 307.Elongation pipeline adapter portion 310 has the first and second male end 312 and 314, and its medial end portions 312 is by screw thread erecting and welding joint 305.By assuring that even if the transition part 302 between the circular neck 304 of APT major component 120 and t shape sensor part 303 is arranged in elongation pipeline adapter portion 310 and is thus still located in procedure seals when device is installed in small diameter pipeline, this adapter allows major component 120 can be installed in a series of line size.
In this embodiment, the upper end 314 or the second end of thread 314 threadably precession that extend pipeline adapter portion 310 couple in parts 315.By being soldered to the retaining ring 340 of cervical region 304, couple parts 315 and be trapped on the cervical region 304 of APT major component together with sleeve pipe 320 and thread cap 325.Couple and parts 315 inner surface has narrow tapering 317, not used for the gap of retaining ring 340 on inner surface.Even if this probability guaranteeing in bobbin seal, APT major component 120 when losing efficacy still to be dropped out or to be reduced its generation from install.When thread cap 325 is tightened, couple the top compression fitting acting on sleeve pipe of parts 315.In installation process, APT major component 120 is inserted into by extending adapter portion 310 and welding point 305, until coming into contact with the opposite side of pipeline 108.Couple parts 315 to be threadably threaded on the end of thread 314 extending adapter portion 310, and sleeve pipe 320 is along transition part slide downward, until cap 325 is threadably threaded on connection parts 315.Tighten described cap and compress the sleeve pipe coupled in parts, to produce bobbin seal.This sealing mechanism makes APT major component can be installed in a series of pipeline or line size together with elongation cervical region and installation hardware.Such as, in the exemplary embodiment, as shown in Figures 4 and 5, single major component 120 can be used in diameter is 4-8 " between pipeline or pipeline 108 in.More clearly illustrating in the side view of Fig. 5, compared with larger diameter pipeline, the groove 121 of APT major component 120 is across the bigger percentage ratio of the diameter of small diameter pipeline 108.Therefore, disclosed APT major component is a part for only average discharge section (flowprofile) when being installed in larger diameter pipeline, but in small diameter pipeline average described flow profile relatively large partly or entirely.Have been found that APT major component and the mounting assembly of the disclosed embodiments operate very well in a series of line sizes.
Although the sleeve pipe mounting assembly 112 in some exemplary embodiments with the elongation of sleeve pipe 320 is used to seal and keep APT major component, but in other embodiments, according to reusability, cost factor etc., it is possible to say that other type of mounting assembly uses together with disclosed concept.It is, for example possible to use other structure implements variable pipeline or line size APT major component concept, to contribute to reusability, so that a unit can be used in multiple installation in order to determine flow, line size etc..
In order to understand how the disclosed embodiments work, it is provided that the review of standard APT major component function.A kind of known APT major component, the model 485 being namely commercially available from Emerson Process Management company (EmersonProcessManagement)APT, including two chambeies, they sensing at two, major component place different pressures:
1. upstream pressure or velocity pressure, is positioned at the anterior place of the second cylinder
2. downstream pressure or cylinder base portion pressure, be positioned at the rear portion place of the second cylinder
APT major component measures the difference between the two pressure, and by the impact of any change how produced in said two press process.For upstream pressure, the velocity profile profile at sensor place is major variable.High pressure coefficient is subject to the impact of the velocity pressure at cylinder front portion place and the ratio of average pipeline velocity pressure.If it is known that velocity profile, then it is assured that the value of this component of signal.
For downstream pressure component, measure cylinder base portion pressure.Because the separation of fluid velocity stream and cylinder creates flows out the eddy current alternately flowed in flakes from described cylinder, create velocity wake region (wakearea) or stagnant area (stagnatedarea) at cylinder rear portion place, so low pressure coefficient is had less directly affecting by pipeline velocity profile simultaneously.Due to described stagnant area, so the pressure that cylinder is below tends to identical along whole length.Additionally, because disclosed major component provides consistent cylinder shape on whole pipe diameter, so the eddy current flowed out is consistent, therefore base portion pressure also remains unanimously.
For effusion meter, discharge coefficient defines flowmeter design and has to comply with the relation of Bernoulli Jacob's energy equation, and also defines the operating characteristic of effusion meter.In order to contrast,The discharge coefficient of type flow transducer is limited by following formula:
Wherein:
K is discharge coefficient
A is fluid dynamic energy coefficient, is approximately constant 1.05 for turbulent fluid flowing a
CphFor high pressure coefficient, or it it is the ratio of front sensors pressure and average speed pressure
CplFor low pressure coefficient, or it it is the ratio of rear portion or base portion pressure and average speed pressure
Pressure coefficient makes the pressure correlation of the flow in cylinder and generation, and provides being better understood from device before it is used as effusion meter.Superperformance it is crucial that APT major component has stable, repeatably and predictable discharge coefficient.The first two characteristic, i.e. stability and repeatability, it is ensured that accurate performance and unfailing performance.This is only guaranteed in the following way, and the attribute of the contribution of the sensor cylinder shape of understanding generation pressure and offer have the design in flow rates interested for linear pressure coefficient.Latter property, the i.e. predictability of discharge coefficient, it is allowed to this technology is applied to the application scenario that geometry is different from the geometry that wherein test data have been collected by maker.
The reliability of the discharge coefficient of major component is relevant to the shape of major component with repeatability.In the exemplary embodiment, asMajor component is such, and disclosed APT major component 120 uses the shape of identical rolling, and therefore flow rate test provides on wider reynolds number range as stable result, and this is not surprisingly.In flow rate test, the test data of generation clearly illustrate, in good even speed tube is measured, Reynolds number independence is expected to.Additionally, be found that the concordance of discharge coefficient in retest in similar line size, this shows the repeatability of disclosed APT major component.
For whole major components, discharge coefficient is determined empirically.Typically not at all line size test even speed tubes being likely to and expecting.The difference is that, it is determined that the relation between the ratio in the region of discharge coefficient and the even speed tube in pipeline and the region of pipeline.Therefore, this technology can apply to the pipeline of the different diameter of the diameter that has from be test for major component.Described relation is commonly referred to as K and blocks (Kvsblockage), and is set up by the curve of the data fitting equation of collection from the major component being arranged in the pipeline with a series of diameter.Owing to a groove of major component or multiple groove are across whole pipeline, so disclosed APT major component test is exemplary to being used for determiningThe K of the discharge coefficient of major component and the analysis of blocking relationship show that 4 " error in pipeline is close to zero.This error is not also relatively small for a groove or multiple groove across the line size of 6 " and 8 " of whole pipeline.
The analysis of K and blocking relationship shows, the data of collection fall in the 1% of linear curve fit, and this indicates the discharge coefficient predictability in the internal diameter of the pipeline (IDs) outside test scope consumingly.
For that generally produce or symmetry pipeline velocity profile, estimate to be not required to measure the entire profile to obtain the good of flow velocity to speed sampling.Can by utilizing the work of early stage that Researches on Fluids person is complete analytically to determine it, with reproduction speed gradient in the pipeline model that the equation form in the speed to give arbitrfary point place makes.One received and accurate rate pattern is PAI rate equation:
Wherein:
Vp is spot speed
Vmax is maximal rate
F is coefficient of pipe friction
ReDFor pipeline Reynolds number
R is the radius at spot speed place
rpFor pipe radius
It is right that the equation can be used to determineThe upstream of sensor or the impact of velocity pressure component.Be 4 to three nominal line sizes ", 6 ", and 8 " pipeline in from a series of average water speed of 2 to 30ft/s, analyze the velocity profile gone out by PAI Equation for Calculating.Analysis shows, for the velocity profile generated, the APT major component speed sampling method of disclosed variable duct size provides obvious goodish result.Partially due to the hole being selected in the pipeline of a series of diameter and/or channel patterns, in certain embodiments, the application of the APT major component of disclosed variable duct size can be limited in following installation: measures the position that the flow field of position is generated, or the position of the flowing in sufficiently close together generation, measurement signal can not adversely be affected at this position wherein whirlpool and asymmetry part.
According to exemplary embodiment, disclosing mounting assembly 112, mounting assembly 112 is for being mounted to process pipeline 108 by APT major component 120 so that it is adjustable to adapt to various sizes of line size that APT major component extends into the length in process pipeline.APT major component has cervical region 304 and sensor part 303.Such as, cervical region 304 can be cylindrical or circular neck, and sensor part can be T-shaped sensor part simultaneously.Erecting and welding joint 305 is connected to process pipeline on the opening 330 in process pipeline, and APT major component is entered in process pipeline by extending it.Elongation pipeline adapter 310 has screw thread on the first and second ends, and APT major component extends through this elongation pipeline adapter 310, so that the transition part 302 between the cervical region of APT major component and sensor part is positioned in the inside of elongation pipeline adapter.First end 307 of elongation pipeline adapter is by threadably precession erecting and welding joint 305.
Couple parts 315 and there are the first and second ends, and make the neck extension of APT major component pass through it.Second end of elongation pipeline adapter is threaded in the first end of connection parts.Sleeve pipe 320 is around the cervical region of APT major component.Cap 325 is screwed into by screw thread on the second end coupling parts, to be coupled in parts by sleeved compression, to produce the sleeve pipe procedure seals of the cervical region around APT major component.
In certain embodiments, elongation pipeline adapter has a length, so that the excessive portion 302 between the cervical region 304 of APT major component and sensor part 303 is positioned in elongation pipeline adapter, and thus, on a series of APT major component positions in the sensor part enabling APT major component is inserted into a series of various sizes of process pipeline with different-diameter so that excessively portion 302 is positioned in procedure seals.
In certain embodiments, mounting assembly also includes the retaining ring 340 that is fixedly attached to the cervical region of APT major component.In certain embodiments, coupling parts and include the inner surface of taper, the gap that the inner surface of this taper passes through from which not used for retaining ring, so that APT major component is also impossible to drop out when sleeve pipe procedure seals lost efficacy.
In certain embodiments, the erecting and welding joint 305 opening in process pipeline is soldered on process pipeline.
In certain embodiments, open a kind of process variable monitoring system, process variable monitoring system is for measuring the process variable of process fluid flow in instruction process pipeline, process variable monitoring system includes the pressure transducer in process variable transmitter, process variable transmitter, APT major component, and this APT major component has the transition part between cervical region, sensor part and cervical region and sensor part.APT major component extends into process pipeline, and the pressure process of process fluid is coupled to pressure transducer, so that pressure transducer provides the pressure measxurement of the flow velocity of the process fluid in instruction process pipeline as output.APT major component is arranged on process pipeline by mounting assembly as above.
In some exemplary embodiments, the storage arrangement of process variable transmitter is configured to the relation data of storage flow coefficient of discharge and obstruction, so that at least one in the controller of measuring circuit and transmitter can be configured with the discharge coefficient of the process pipeline for different-diameter.
Although the present invention has been described with reference to preferred embodiment, but it would be recognized by those skilled in the art that and can make change without departing from the spirit and scope of the present invention in form and details.Such as, in some exemplary embodiments, it is possible to produce hole and/or the channel patterns of APT major component based on the minimum diameter pipeline using APT major component and mounting assembly together.Then, this hole and/or channel patterns can be used for larger diameter pipeline.In some exemplary embodiments, any hole and/or the channel patterns of APT major component, this hole and/or channel patterns can be generated less than the distance of the diameter of the minimum diameter pipeline using APT major component together or the diameter extending less than the minimum diameter pipeline using APT major component together on the far-end of APT major component.For example, it is possible to generate the only hole on the APT major component that the mode of 2/3rds of minimum applicable pipeline extends and/or channel patterns, then this hole and/or channel patterns are used in again in a series of bigger line size.
Claims (20)
1. a process variable monitoring system, for measuring the process variable of the flow velocity indicating the process fluid in a series of various sizes of process pipelines, this process variable monitoring system includes:
Process variable transmitter；
It is arranged in the pressure transducer of process variable transmitter；
Even speed tube (APT) major component, this even speed tube major component has the remote area including one or more groove, described even speed tube major component can extend in process pipeline so that the pressure process of process fluid is coupled to pressure transducer, so that the pressure measurements of the flow velocity of process fluid is as output in pressure transducer offer instruction process pipeline, including the remote area of the one or more groove be sized to so that the one or more groove when larger-diameter process pipeline across the percentage ratio of pipe diameter than the pipeline at small diameter little across the percentage ratio of pipe diameter；And
Mounting assembly, this mounting assembly is configured to be mounted on process pipeline described even speed tube major component, and provides procedure seals so that the length of the described even speed tube major component extended in process pipeline can be adjusted for various sizes of process pipeline.
2. process variable monitoring system as claimed in claim 1, wherein, described even speed tube major component includes the transition part between cervical region, sensor part and described cervical region and described sensor part, and wherein, the transition part between described cervical region and described sensor part can be adjustably positioned in described mounting assembly.
3. process variable monitoring system as claimed in claim 2, wherein, described mounting assembly also includes elongation pipeline, and the transition part between described cervical region and described sensor part can be adjustably positioned in this elongation pipeline.
4. process variable monitoring system as claimed in claim 3, wherein, described mounting assembly also includes:
Erecting and welding joint, this erecting and welding joint is soldered to process pipeline on the opening of process pipeline and makes even speed tube major component extend through in this erecting and welding joint entrance process pipeline, described elongation pipeline has screw thread on the first end and the second end, wherein, first end of described elongation pipeline is threaded in described erecting and welding joint by screw thread, so that described even speed tube major component extends through erecting and welding joint；
Coupling parts, these connection parts have the first end and the second end, and make the neck extension of described even speed tube major component pass through these connection parts, and wherein, the second end of described elongation pipeline is threaded in the first end of described connection parts by screw thread；And
Sleeve pipe, this sleeve pipe is around the cervical region of described even speed tube major component.
5. process variable monitoring system as claimed in claim 4, wherein, described mounting assembly also includes cap, this cap by screw thread be screwed on the second end of described connection parts with by described sleeved compression in described connection parts, in order to around described even speed tube major component cervical region produce sleeve pipe procedure seals.
6. a mounting assembly, for even speed tube (APT) major component is mounted to process pipeline, make the length in the process that the extends into pipeline of even speed tube major component can be adjusted to accommodate various sizes of process pipe diameter, described even speed tube major component has cervical region and sensor part, and described mounting assembly includes:
Erecting and welding joint, this erecting and welding joint opening in process pipeline is connected to process pipeline, and makes even speed tube major component extend through in this erecting and welding joint entrance process pipeline；
Elongation pipeline adapter, the adapter of this elongation pipeline has screw thread on the first end and the second end, and even speed tube major component extends through the adapter of this elongation pipeline, so that the transition part between the described cervical region of even speed tube major component and described sensor part is positioned in the inside of described elongation pipeline adapter, wherein, the first end of described elongation pipeline adapter is threaded in described erecting and welding joint；
Coupling parts, these connection parts have the first end and the second end, and make the neck extension of even speed tube major component pass through these connection parts, and wherein, the second end of described elongation pipeline adapter is threaded in the first end of described connection parts by screw thread；
Sleeve pipe, this sleeve pipe is around the cervical region of described even speed tube major component；And
Cap, this cap by screw thread be screwed on the second end of described connection parts with by described sleeved compression in described connection parts, and around described even speed tube major component cervical region produce sleeve pipe procedure seals.
7. mounting assembly as claimed in claim 6, wherein, the adapter of described elongation pipeline has a length, so that the transition part between cervical region and the sensor part of described even speed tube major component is positioned in the adapter of described elongation pipeline, and thus can being inserted on multiple positions of a series of even speed tube major components in a series of various sizes of process pipeline with different-diameter in the sensor part allowing described even speed tube major component, described transition part is positioned in procedure seals.
8. mounting assembly as claimed in claim 6, also includes retaining ring, and this retaining ring is coupled the cervical region of described even speed tube major component regularly.
9. mounting assembly as claimed in claim 8, wherein, described retaining ring is soldered to the cervical region of described even speed tube major component.
10. mounting assembly as claimed in claim 8, wherein, described connection parts include cone-shaped inner surface, and this cone-shaped inner surface lacks for retaining ring from its gap passed through, so that described even speed tube major component still can not drop out when sleeve pipe procedure seals lost efficacy.
11. mounting assembly as claimed in claim 6, wherein, described erecting and welding joint is soldered to process pipeline on the opening in process pipeline.
12. a process variable monitoring system, for measuring the process variable of the flow velocity of the process fluid in instruction process pipeline, described process variable monitoring system includes:
Process variable transmitter；
It is arranged in the pressure transducer of process variable transmitter；
Even speed tube (APT) major component, this even speed tube major component has cervical region, sensor part and the transition part between described cervical region and described sensor part, described even speed tube major component extends in process pipeline, and the pressure process of process fluid is coupled to pressure transducer, pressure transducer is made to provide the pressure measurements of flow velocity of process fluid in instruction process pipeline as output, wherein, the remote area of described sensor part includes one or more groove, and the size of this remote area be configured so that the one or more groove when larger-diameter process pipeline across the percentage ratio of pipe diameter than the pipeline at small diameter little across the percentage ratio of pipe diameter；
Erecting and welding joint, this erecting and welding joint opening in process pipeline is soldered to process pipeline, and makes even speed tube major component extend through in this erecting and welding joint entrance process pipeline；
Elongation pipeline adapter, the adapter of this elongation pipeline has screw thread on the first end and the second end, and even speed tube major component extends through the adapter of this elongation pipeline, so that the transition part between the described cervical region of even speed tube major component and described sensor part is positioned in the inside of described elongation pipeline adapter, wherein, the first end of described elongation pipeline adapter is threaded in described erecting and welding joint by screw thread；
Coupling parts, these connection parts have the first end and the second end, and make the neck extension of described even speed tube major component pass through these connection parts, and wherein, the second end of described elongation pipeline adapter is threaded in the first end of described connection parts by screw thread；
Sleeve pipe, this sleeve pipe is around the cervical region of described even speed tube major component；And
Cap, this cap by screw thread be screwed on the second end of described connection parts with by described sleeved compression in described connection parts, and around described even speed tube major component cervical region produce sleeve pipe procedure seals.
13. process variable monitoring system as claimed in claim 12, wherein, the adapter of described elongation pipeline has a length, so that the transition part between cervical region and the sensor part of described even speed tube major component is positioned in the adapter of described elongation pipeline, and thus can being inserted on multiple positions of a series of even speed tube major components in a series of various sizes of process pipeline with different-diameter in the sensor part allowing described even speed tube major component, described transition part is positioned in procedure seals.
14. process variable monitoring system as claimed in claim 13, also including retaining ring, this retaining ring is soldered to the cervical region of described even speed tube major component.
15. process variable monitoring system as claimed in claim 14, wherein, described connection parts include cone-shaped inner surface, and this cone-shaped inner surface lacks for retaining ring from its gap passed through, so that described even speed tube major component still can not drop out when sleeve pipe procedure seals lost efficacy.
16. process variable monitoring system as claimed in claim 13, also including the telecommunication circuit being arranged in process variable transmitter, this telecommunication circuit is configured to connect to process control loop and is communicated by process control loop.
17. process variable monitoring system as claimed in claim 16, wherein, described telecommunication circuit is configured for radio communication.
18. process variable monitoring system as claimed in claim 16, also including measuring circuit, this measuring circuit is coupled to pressure transducer and is configured to supply sensor output.
19. process variable monitoring system as claimed in claim 18, also including controller, this controller is coupled to described measuring circuit and is coupled to described telecommunication circuit.
20. process variable monitoring system as claimed in claim 19, also include storage arrangement, this storage arrangement is configured to the data of the relation of storage flow coefficient of discharge and obstruction so that described measuring circuit and at least one in described controller can be configured with the discharge coefficient of the process pipeline of different-diameter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/585,423 | 2014-12-30 | ||
| US14/585,423 US9551601B2 (en) | 2014-12-30 | 2014-12-30 | Variable line size averaging pitot tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105737910A true CN105737910A (en) | 2016-07-06 |
| CN105737910B CN105737910B (en) | 2018-12-11 |
Family
ID=55178320
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520269461.9U Withdrawn - After Issue CN205079801U (en) | 2014-12-30 | 2015-04-29 | Installation component and process variable monitoring system |
| CN201510212616.XA Active CN105737910B (en) | 2014-12-30 | 2015-04-29 | Variable line size even speed tube |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520269461.9U Withdrawn - After Issue CN205079801U (en) | 2014-12-30 | 2015-04-29 | Installation component and process variable monitoring system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9551601B2 (en) |
| EP (1) | EP3240999B1 (en) |
| JP (1) | JP6637982B2 (en) |
| CN (2) | CN205079801U (en) |
| WO (1) | WO2016109181A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9551601B2 (en) * | 2014-12-30 | 2017-01-24 | Dieterich Standard, Inc. | Variable line size averaging pitot tube |
| US10175072B2 (en) * | 2017-01-27 | 2019-01-08 | Badger Meter, Inc. | Insertion vortex flowmeter element |
| CN107462291A (en) * | 2017-08-02 | 2017-12-12 | 中国航空工业集团公司哈尔滨空气动力研究所 | A kind of high-precision high voltage gas flow measurement and control device |
| EP4235113A3 (en) * | 2017-12-28 | 2023-10-04 | Onicon Incorporated | Scalable monolithic sensor assembly, controller, and methods of making and installing same |
| US10908004B2 (en) | 2018-07-13 | 2021-02-02 | Onicon Inc. | Airflow sensor and system |
| US10718644B1 (en) * | 2019-01-03 | 2020-07-21 | Dwyer Instruments, Inc. | Sensor head for insertion electromagnetic flow meter |
| CN112284472B (en) * | 2020-09-30 | 2024-01-30 | 迈科洛(广州)仪表有限公司 | Differential pressure type gas mass flow calculation method and flowmeter |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2018500571A (en) | 2018-01-11 |
| JP6637982B2 (en) | 2020-01-29 |
| WO2016109181A1 (en) | 2016-07-07 |
| US20160187170A1 (en) | 2016-06-30 |
| EP3240999B1 (en) | 2023-06-28 |
| CN105737910B (en) | 2018-12-11 |
| US9551601B2 (en) | 2017-01-24 |
| EP3240999A1 (en) | 2017-11-08 |
| CN205079801U (en) | 2016-03-09 |
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